common: cosmetic: CONFIG_ROOTPATH checkpatch compliance

Remove MK_STR from places that consume CONFIG_ROOTPATH to force all definitions to be string literals.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Cc: Joe Hershberger <joe.hershberger@gmail.com>
Cc: Wolfgang Denk <wd@denx.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/include/configs/blackvme.h b/include/configs/blackvme.h
index b425b7b..f2dc6aa 100644
--- a/include/configs/blackvme.h
+++ b/include/configs/blackvme.h
@@ -81,7 +81,7 @@
 #define CONFIG_GATEWAYIP	169.254.144.144	/* dedic card  */
 #define CONFIG_SERVERIP	169.254.144.144	/* tftp server */
 #define CONFIG_NETMASK		255.255.255.0
-#define CONFIG_ROOTPATH	/export/uClinux-dist/romfs	/*NFS*/
+#define CONFIG_ROOTPATH		"/export/uClinux-dist/romfs"	/*NFS*/
 #define CFG_AUTOLOAD		"no"
 #define CONFIG_CMD_DHCP
 #define CONFIG_CMD_PING